Annual mean 13°C · wettest around July · prevailing wind SW
Warmest
30.7 °C
Coldest
3.5 °C
Wettest
36%
Windiest
4.0 m/s
Prevailing
SW
3.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Iijima over the whole year is 13°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -2°C. The rainy (wet) season in Iijima runs from April to September, peaking in July with a 27% chance of rain on a given day. The dry season is October to March; January is the driest month, at 8%. Winds in Iijima are highest in April, averaging 3.1 m/s (11 km/h), and lightest in September, at 2.3 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Iijima come in January, when the sky is typically 51% covered; September is the cloudiest month, at 77%.
Month by month Iijima climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
4°C
-2°C
-1°C
8%
51%
2.7 m/s
0
0
9
February
5°C
-1°C
0°C
10%
56%
2.9 m/s
0
0
13
March
10°C
3°C
6°C
17%
62%
3.0 m/s
7
0
44
April
16°C
8°C
12°C
18%
66%
3.1 m/s
37
1
72
May
21°C
13°C
18°C
18%
70%
2.8 m/s
73
11
69
June
24°C
17°C
23°C
22%
76%
2.6 m/s
71
38
38
July
28°C
22°C
29°C
27%
76%
2.5 m/s
23
58
6
August
29°C
23°C
31°C
19%
72%
2.5 m/s
14
54
4
September
25°C
19°C
26°C
21%
77%
2.3 m/s
54
50
25
October
18°C
12°C
17°C
17%
70%
2.3 m/s
59
11
70
November
13°C
6°C
9°C
10%
58%
2.3 m/s
19
0
67
December
7°C
1°C
2°C
9%
54%
2.7 m/s
1
0
21
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Iijima weather by season
Year round, Iijima has days of about 4°C at their warmest in January, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from -2°C to 23°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around July and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Iijima weather in winterDecember to February
High 5°CLow -1°CRain 9%
Winter in Iijima has typical daily highs of about 5°C and lows of about -1°C, with a 9% chance of rain on a given day.
Iijima weather in springMarch to May
High 16°CLow 8°CRain 18%
Spring in Iijima has typical daily highs of about 16°C and lows of about 8°C, with a 18% chance of rain on a given day.
Iijima weather in summerJune to August
High 27°CLow 21°CRain 23%
Summer in Iijima has typical daily highs of about 27°C and lows of about 21°C, with a 23% chance of rain on a given day.
Iijima weather in autumnSeptember to November
High 19°CLow 12°CRain 16%
Autumn in Iijima has typical daily highs of about 19°C and lows of about 12°C, with a 16% chance of rain on a given day.
When is the rainy season in Iijima?
The rainy (wet) season in Iijima runs from April to September, peaking in July with a 27% chance of rain on a given day. The dry season is October to March; January is the driest month, at 8%.
What time of year is Iijima windiest?
Winds in Iijima are highest in April, averaging 3.1 m/s (11 km/h), and lightest in September, at 2.3 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Iijima year round?
The average temperature in Iijima over the whole year is 13°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -2°C.